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Flow Chart of Troubleshooting and Circuit Diagrams
10-
9
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10-1-4. Charging Part
Abnormal charging part
The pin #19,#20 of
IFC500 is
VEXT >= 5V?
Yes
Replace TA,Check
IFC500
No
Yes
Resolder R412, check U408
The pin #2 of U408 is
"high"?
No
Yes
Check the
U404
No
The pin #10 of U404
is "high"?
Yes
Resolder or change
U404
No
END
Yes
The
ITERM<=100mA(full
charging)?
The pin #3 of TR501
is "high"?
Resolder R506, check TR501
No
Yes